@opra/client/esm/http/http-interceptor-handler.js

Opra Client package

export class HttpInterceptorHandler {
    constructor(interceptors, finalHandler) {
        this.chain = interceptors.reduceRight((chainTailFn, interceptor) => (initialRequest, handler) => interceptor.intercept(initialRequest, {
            handle: downstreamRequest => chainTailFn(downstreamRequest, handler),
        }), chainEnd);
        this.finalHandler = finalHandler;
    }
    handle(initialRequest) {
        return this.chain(initialRequest, req => this.finalHandler.handle(req));
    }
}
function chainEnd(req, handler) {
    return handler(req);
}